Note

  1. Please report issues with the manual on the GitHub page.

  2. Please cite SUEWS with proper information from our Zenodo page.

4.2.12. SUEWS_Water.txt

SUEWS_Water.txt specifies the characteristics for the water surface cover type by linking codes in column 1 of SUEWS_Water.txt to the codes specified in SUEWS_SiteSelect.txt (Code_Water).

No.

Column Name

Use

Description

1

Code

L

Code linking to a corresponding look-up table.

2

AlbedoMin

MU

Effective surface albedo (middle of the day value) for wintertime (not including snow).

3

AlbedoMax

MU

Effective surface albedo (middle of the day value) for summertime.

4

Emissivity

MU

Effective surface emissivity.

5

StorageMin

MD

Minimum water storage capacity for upper surfaces (i.e. canopy).

6

StorageMax

MD

Maximum water storage capacity for upper surfaces (i.e. canopy)

7

WetThreshold

MD

Depth of water which determines whether evaporation occurs from a partially wet or completely wet surface [mm].

8

StateLimit

MU

Upper limit to the surface state. [mm]

9

WaterDepth

MU

Water depth [mm].

10

DrainageEq

MD

Calculation choice for Drainage equation

11

DrainageCoef1

MD

Coefficient D0 [mm h-1] used in DrainageEq

12

DrainageCoef2

MD

Coefficient b [-] used in DrainageEq

13

OHMCode_SummerWet

L

Code for OHM coefficients to use for this surface during wet conditions in summer, linking to SUEWS_OHMCoefficients.txt.

14

OHMCode_SummerDry

L

Code for OHM coefficients to use for this surface during dry conditions in summer, linking to SUEWS_OHMCoefficients.txt.

15

OHMCode_WinterWet

L

Code for OHM coefficients to use for this surface during wet conditions in winter, linking to SUEWS_OHMCoefficients.txt.

16

OHMCode_WinterDry

L

Code for OHM coefficients to use for this surface during dry conditions in winter, linking to SUEWS_OHMCoefficients.txt.

17

OHMThresh_SW

MD

Temperature threshold determining whether summer/winter OHM coefficients are applied [°C]

18

OHMThresh_WD

MD

Soil moisture threshold determining whether wet/dry OHM coefficients are applied [-]

19

ESTMCode

L

Code for ESTM coefficients linking to SUEWS_ESTMCoefficients.txt

20

AnOHM_Cp

MU

Volumetric heat capacity for this surface to use in AnOHM [J m-3]

21

AnOHM_Kk

MU

Thermal conductivity for this surface to use in AnOHM [W m K-1]

22

AnOHM_Ch

MU

Bulk transfer coefficient for this surface to use in AnOHM [-]

An example SUEWS_Water.txt can be found below:

1    	 2         	 3         	 4          	 5          	 6          	 7            	 8          	 9          	 10         	 11            	 12            	 13                	 14                	 15                	 16                	 17           	 18           	 19       	 20       	 21       	 22
Code 	 AlbedoMin 	 AlbedoMax 	 Emissivity 	 StorageMin 	 StorageMax 	 WetThreshold 	 StateLimit 	 WaterDepth 	 DrainageEq 	 DrainageCoef1 	 DrainageCoef2 	 OHMCode_SummerWet 	 OHMCode_SummerDry 	 OHMCode_WinterWet 	 OHMCode_WinterDry 	 OHMThresh_SW 	 OHMThresh_WD 	 ESTMCode 	 AnOHM_Cp 	 AnOHM_Kk 	 AnOHM_Ch
1000 	 0.08      	 0.08      	 0.95       	 0.5        	 0.5        	 0.5          	 2000       	 2000       	 0          	 0             	 0             	 60                	 60                	 60                	 60                	 10           	 0.9          	 60       	 4100000   	 1.2      	 4        	 ! 	 Helsinki 	 Jarvi   et       al.    (2014)
551  	 0.1       	 0.1       	 0.95       	 0.5        	 0.5        	 0.5          	 1000       	 1000       	 -999       	 -999          	 -999          	 60                	 60                	 60                	 60                	 10           	 0.9          	 60       	 4100000   	 1.2      	 4        	 ! 	 Swindon    (no     water) 	 Ward   et       al.   (2013)
661  	 0.1       	 0.1       	 0.95       	 0.5        	 0.5        	 0.5          	 30000      	 20000      	 0          	 0             	 0             	 60                	 60                	 60                	 60                	 10           	 0.9          	 813      	 4100000   	 1.2      	 4        	 ! 	 London
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